Printing-plate.



N6. 859,053. I PATENTBD JULY 2, 1907.

' J. S. DUNCAN.

PRINTING PLATE.

APPLICATION FILED SEPT.2.1904- err-inns ensions op nion.

JOSEPH S. DUNCAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO ADDRESSOGRAPH GOlvIPil'NY, OF

CHICAGO, ILLINOES, A CORPORATION OF ILLINOIS.

rnrrtrms-srinrn.

Specificiztion of Letters Patent.

Patented Jul 2', 1907.

Application filed September 2, 1904. Serial 1%. 223,098.

To all whom it may concern:

Be it known that I, .losnrn S. DUNCAN, a citizen of the United States, residing at Chicago, in the county of Cool: and State of Illinois, have invented new and useful Improvements in Printing-Plates. of which'the following is a specification.

The object of this invention is to provide a. printing plate of simple and inexpensive constrnctionhaving an integral index tab adapting it to be usedv in 21. card index system. I

In the accompanying drawings: Figure 1 is a plan view of a. printing device embodying the invention. Fig. 2 is a. longitudinal sectional view on the line 2-2 of Fig. 1. Fig. 3 is a transverse sectional view on the line 3-3 of Fig. 1.

The plate 5 is mnde, preferably, of metal which will per lief thereon. I provide the plate with spacing guards 6 formed by bending over the edges of the plate in the form of flanges, and these guards are preferably located at the ends of the plate so that a number of plates can be piled one above the other or arranged side by side in it tray or holder without rubbing or injuring the printing characters thereon as each plate will be spaced apart by the guards a, distance slightly greater than the height of the type upon the plate. These guards stiffen and strengthen the plate transversely and at the lower edge of the plate I preferably provide at head 7 to stiffen and strengthen the plate lengthwise.

t the printing characters to be stamped in re- On the upper {edge of the plate and between its ends I. provide a. tab to receive an index character. This tab is made inti'gral with the plate and itinay be located at any point between the ends of the plate;

The index character may be stamped, printed, or otherwise afiixed to the tab to enable the plate to be used in a. card index system and they may consist of letters, numbers or other characters.

My improved printing device is simple in construction and inexpensive to manufacture, and the tab. The lab enni Having thus fully described my invention, what I- elairn and desire to secure by Letters Patent is:

' A printing device stamped out of a single sheet of metal and comprising an imperfornte metal plate having printlng characters on one side stamped up'therefrorn, guard flanges at the ends of the plate, on one side thereof, to pre-.

vent contact of the plates with the printin" characters when :1 number or plates are arranged in a stack. a bend at the bottom of the plate formed by bending; the lower edge of the plate, snld flanges and bend stiffening and strengthening the plate transversely and lengthwise, and a tab projeetingfmm the upper edge of the plate to recelve index characters.

JOSEPH S. DUNCAN.

Witnesses:

WM. 0. BELT, M. A. Krnmn. 

